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It could unlock the show's entire mystery.

Disney+’s new Marvel show WandaVision is fascinating on so many levels. For starters, it stars couple Wanda Maximoff / Scarlet Witch (Elizabeth Olsen) and Vision (Paul Bettany) who have no idea how they got to their idyllic town of Westview and WTH they’re doing there.

In the episodes that have been released so far, Wanda and Vision seem to be time-hopping between decades, where a bunch of other trippy stuff goes down—including Wanda being pregnant. The whole thing is a little confusing for everyone—including Wanda and Vision—since he’s not human. (He's technically a "synthezoid," which is basically a robot made to look like a person.)

Wanda ends up giving birth to a baby in episode three, assisted by her neighbor Geraldine (Teyonah Parris) who just *happens* to swing by, and then she has another baby, not realizing she was carrying twins.

While chatting with Geraldine post-birth, Wanda starts singing a lullaby to her children. Wanda tells her neighbor that she's a twin, too, and that her brother, Pietro, died. (If you watch the Marvel movies, you’re probably aware that Wanda's brother—who also goes by Quicksilver (played by Aaron Taylor-Johnson)—was killed by Ultron in Avengers: Age of Ultron.)

"He was killed by Ultron, wasn't he?" Geraldine asks. Wanda tears up before asking her to repeat what she just said. At this point, Wanda starts to get suspicious.

That’s where Geraldine’s necklace comes into play. Wanda suddenly notices the necklace, which looks like an upside-down sword inside a teardrop shape. Geraldine is cagey about the necklace when Wanda asks about it. “Who are you?” she asks, as her neighbor looks super flustered.

And if you paused to Google what the heck was going on, you're not alone. People are (understandably) freaking out about it on Twitter.

When they did a close-up of Geraldine's necklace???? Chile...I was like pack it UP I KNOW WHERE THIS IS GOING AND ME SCARED AS HELL

Some have pointed out that Geraldine's necklace is shaped like the symbol of the Sentient World Observation and Response Department (S.W.O.R.D.), which was first teased at the end of Spider-Man: Far From Home. The organization is similar to the now-defunct S.H.I.E.L.D., which deals with super-powered beings and events.

As Wanda confronts Geraldine about her necklace, Vision is in the middle of an unsettling convo outside. While chatting with his neighbors Agnes and Herb, he discovers that Geraldine doesn’t actually live in Westview. By the time Vision goes back inside, Geraldine has vanished, and Wanda doesn't mention her.

In the next scene, we see Geraldine literally kicked out of town. She crashes through what looks like a force-field bubble and lands, enveloped by tendrils of Wanda's signature red magic, onto the ground. She's surrounded by members of the military in the present day. The S.W.O.R.D. symbol also appears on the sides of their vehicles.

While no one knows for sure, some fans think that Geraldine was sent to Westview by S.W.O.R.D to keep tabs on Wanda. When Wanda realized something was off, she banished her. Other theories suggest that Westview is a reality created by Wanda and only she knows what’s really going on.

Based on the trailer for episode 4, now available on Disney+, it looks like Geraldine—and her necklace—will be back. But how exactly she makes her return is another WandaVision mystery.

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